問題描述

我在我的應用程序中使用 moment.js 作為日期/時間，但它似乎不能很好地與 Jasmine 的模擬功能配合使用.我在下面整理了一個測試套件來顯示我的問題:

I'm using moment.js for date/time in my application, but it seems like it doesn't play well with Jasmine's mocking capabilities. I've put together a test suite below that shows my issue:

jasmine.clock().mockDate 似乎暫時不起作用，而對于 Date 卻可以正常工作.

jasmine.clock().mockDate doesn't seem to work for moment, while it works fine for Date.

describe('Jasmine tests', function () {
    beforeEach(function() {
        jasmine.clock().install();
    });

    afterEach(function() {
        jasmine.clock().uninstall();
    });

    // Pass
    it('uses the mocked time with Date', function() {
        var today = new Date('2015-10-19');
        jasmine.clock().mockDate(today);
        expect(new Date().valueOf()).toEqual(today.valueOf());
    });


    // Fail
    it('uses the mocked time with moment', function() {
        var today = moment('2015-10-19');
        jasmine.clock().mockDate(today);

        expect(moment().valueOf()).toEqual(today.valueOf());
    });
});

為什么 Date 能按預期工作，而 moment 不能?moment 不是在底層使用 Date 嗎?

Why does Date work as expected while moment does not? Isn't moment using Date under the hood?

使用 Jasmine 模擬 moment 的正確方法是什么?

What is the right way to mock moment using Jasmine?

推薦答案

jasmine.clock().mockDate 期望 Date 作為輸入.Date 和 moment 不完全兼容.如果您在規范本身中提供要模擬的日期，您可以簡單地使用 Date 代替.

jasmine.clock().mockDate expects Date as input. Date and moment are not fully compatible. If you provide the to-be-mocked date in the spec itself you could simply use Date there instead.

如果您的代碼生成要模擬的時刻，或者您更愿意使用時刻 API，請查看 moment.toDate().此方法返回 Date 對象支持片刻.

If your code generates a moment you want to mock, or you'd rather use the moment API, take a look at moment.toDate(). This method returns the Date object backing a moment.

it('uses the mocked time with moment', function() {
    var today = moment('2015-10-19').toDate();
    jasmine.clock().mockDate(today);
    expect(moment().valueOf()).toEqual(today.valueOf());
});

這篇關于用 moment.js 模擬茉莉花日期的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！